body, h1, h2, h3, h4, h5, h6, hr, p, blockquote, dl, dt, dd, ul, ol, li, pre, form, fieldset, legend, button, input, textarea, th, td { 
    margin: 0; 
    padding: 0; 
    box-sizing: border-box;
  } 
  ol, ul, li {
    list-style: none;
  }
  table {
    border-collapse: collapse;
    border-spacing: 0;
  }
  textarea { 
    resize: none;
  }
  ::-webkit-scrollbar {
    width: 10px;
    height: 10px;
  }
  html, body {
    font-family: "Arial", "Microsoft YaHei", "黑体", "宋体", "微软雅黑", sans-serif;
  }
  body {
    height: 100%; 
    width: 100%;
    line-height: 22px;
    font-size: 12px;
    overflow-y: hidden;
    -webkit-text-size-adjust: none;
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0);
  }
   
  /*清除浮动*/
  .clearfix:before,
  .clearfix:after {
    content: " ";
    display: inline-block;
    height: 0;
    clear: both;
    visibility: hidden;
  }
  .clearfix {
    *zoom: 1;
  }